[asterisk-users] On SIP INVITE answering to IP:port found in Contact: header.

Joshua Colp jcolp at digium.com
Tue Apr 16 18:34:37 CDT 2013

Markus wrote:
> Hi list!
> I'm trying to get a DID routed to me and the provider seems to have an
> unusual setup. Or maybe not? From looking at their SIP header they are
> using "BroadWorks".
> The problem: they're sending their SIP invite from port 36252. My
> Asterisk 10.7.1 is answering to that port 36252 but their BroadWorks
> thingie is not listening on that port, but instead on port 5060. So they
> want me to send my SIP responses to the IP:port they send via the
> Contact: header.

If you set nat=no for that specific peer it should work as you need. 
'rport' is forced on these days which works for most situations, except 
with some platforms and Cisco phones. >_>

Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at:  www.digium.com  & www.asterisk.org

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